The most valuable tools in a developer's workflow are often the smallest. They eliminate the friction of repetitive micro-tasks — decoding a token, formatting a response, generating a test ID — without requiring a context switch away from the work that matters.
1. JSON Formatter and Validator
Paste any API response or config file and instantly see it indented, structured, and validated. Catches syntax errors with precise position data. Open JSON Formatter →
2. Base64 Encoder/Decoder
JWT payload inspection, Basic Auth header construction, data URI verification. Both directions, instantly, no server contact. Open Base64 Tool →
3. UUID Generator
Seed scripts, test fixtures, idempotency keys — up to 100 UUID v4 values at once, copied with one click. Open UUID Generator →
4. Password Generator
Environment secrets, staging API keys, session tokens — cryptographically randomised, transmitted nowhere. Open Password Generator →
5. QR Code Generator
Open staging URLs on physical devices without typing. Share demo URLs at presentations. PNG downloaded in seconds. Open QR Generator →
6. Text Case Converter
Database column → camelCase variable → PascalCase class → kebab-case CSS, all in one click. Open Text Case Converter →
7. Markdown Previewer
README files, PR descriptions, and documentation with live side-by-side HTML preview. Open Markdown Previewer →
8. Image Compressor
Any image added to a README or documentation should be compressed first. 3MB → 200KB with no visible quality loss. Open Image Compressor →
9. Word Counter
Documentation, changelogs, and commit messages have length considerations. Real-time word, character, and reading time stats. Open Word Counter →
10. Unit Converter
Milliseconds to seconds, bytes to kilobytes, metres to feet — precise results with plain-text display. Open Unit Converter →
Try the Free Tools
14 free, browser-based utilities. No signup, no data stored, no limits.
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